From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Chou Date: Fri, 6 Nov 2015 15:00:21 +0800 Subject: [U-Boot] [PATCH 02/10] dm: timer: Implement pre_probe() In-Reply-To: <1446732171-7439-3-git-send-email-bmeng.cn@gmail.com> References: <1446732171-7439-1-git-send-email-bmeng.cn@gmail.com> <1446732171-7439-3-git-send-email-bmeng.cn@gmail.com> Message-ID: <563C5005.3010305@wytron.com.tw> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Bin, On 2015?11?05? 22:02, Bin Meng wrote: > Every timer device needs to have a valid clock frequency and it > can be specified in the device tree. Use pre_probe() to get this > in the timer uclass driver. > > Signed-off-by: Bin Meng > --- > > drivers/timer/timer-uclass.c | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/drivers/timer/timer-uclass.c b/drivers/timer/timer-uclass.c > index 82c6897..0218591 100644 > --- a/drivers/timer/timer-uclass.c > +++ b/drivers/timer/timer-uclass.c > @@ -9,6 +9,8 @@ > #include > #include > > +DECLARE_GLOBAL_DATA_PTR; > + > /* > * Implement a timer uclass to work with lib/time.c. The timer is usually > * a 32 bits free-running up counter. The get_rate() method is used to get > @@ -35,8 +37,19 @@ unsigned long timer_get_rate(struct udevice *dev) > return uc_priv->clock_rate; > } > > +static int timer_pre_probe(struct udevice *dev) > +{ > + struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev); > + > + uc_priv->clock_rate = fdtdec_get_int(gd->fdt_blob, dev->of_offset, > + "clock-frequency", 0); > + > + return 0; > +} > + > UCLASS_DRIVER(timer) = { > .id = UCLASS_TIMER, > .name = "timer", > + .pre_probe = timer_pre_probe, > .per_device_auto_alloc_size = sizeof(struct timer_dev_priv), > }; > Acked-by: Thomas Chou